mirror of
https://github.com/go-gitea/gitea
synced 2024-11-17 23:41:49 +01:00
c83168104b
Use a more general method to sanitize URLs with credentials: Simple and intuitive / Faster / Remove all credentials in all URLs
75 lines
2.6 KiB
Go
75 lines
2.6 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package util
|
|
|
|
import (
|
|
"bytes"
|
|
"unicode"
|
|
|
|
"github.com/yuin/goldmark/util"
|
|
)
|
|
|
|
type sanitizedError struct {
|
|
err error
|
|
}
|
|
|
|
func (err sanitizedError) Error() string {
|
|
return SanitizeCredentialURLs(err.err.Error())
|
|
}
|
|
|
|
func (err sanitizedError) Unwrap() error {
|
|
return err.err
|
|
}
|
|
|
|
// SanitizeErrorCredentialURLs wraps the error and make sure the returned error message doesn't contain sensitive credentials in URLs
|
|
func SanitizeErrorCredentialURLs(err error) error {
|
|
return sanitizedError{err: err}
|
|
}
|
|
|
|
const userPlaceholder = "sanitized-credential"
|
|
|
|
var schemeSep = []byte("://")
|
|
|
|
// SanitizeCredentialURLs remove all credentials in URLs (starting with "scheme://") for the input string: "https://user:pass@domain.com" => "https://sanitized-credential@domain.com"
|
|
func SanitizeCredentialURLs(s string) string {
|
|
bs := util.StringToReadOnlyBytes(s)
|
|
schemeSepPos := bytes.Index(bs, schemeSep)
|
|
if schemeSepPos == -1 || bytes.IndexByte(bs[schemeSepPos:], '@') == -1 {
|
|
return s // fast return if there is no URL scheme or no userinfo
|
|
}
|
|
out := make([]byte, 0, len(bs)+len(userPlaceholder))
|
|
for schemeSepPos != -1 {
|
|
schemeSepPos += 3 // skip the "://"
|
|
sepAtPos := -1 // the possible '@' position: "https://foo@[^here]host"
|
|
sepEndPos := schemeSepPos // the possible end position: "The https://host[^here] in log for test"
|
|
sepLoop:
|
|
for ; sepEndPos < len(bs); sepEndPos++ {
|
|
c := bs[sepEndPos]
|
|
if ('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z') || ('0' <= c && c <= '9') {
|
|
continue
|
|
}
|
|
switch c {
|
|
case '@':
|
|
sepAtPos = sepEndPos
|
|
case '-', '.', '_', '~', '!', '$', '&', '\'', '(', ')', '*', '+', ',', ';', '=', ':', '%':
|
|
continue // due to RFC 3986, userinfo can contain - . _ ~ ! $ & ' ( ) * + , ; = : and any percent-encoded chars
|
|
default:
|
|
break sepLoop // if it is an invalid char for URL (eg: space, '/', and others), stop the loop
|
|
}
|
|
}
|
|
// if there is '@', and the string is like "s://u@h", then hide the "u" part
|
|
if sepAtPos != -1 && (schemeSepPos >= 4 && unicode.IsLetter(rune(bs[schemeSepPos-4]))) && sepAtPos-schemeSepPos > 0 && sepEndPos-sepAtPos > 0 {
|
|
out = append(out, bs[:schemeSepPos]...)
|
|
out = append(out, userPlaceholder...)
|
|
out = append(out, bs[sepAtPos:sepEndPos]...)
|
|
} else {
|
|
out = append(out, bs[:sepEndPos]...)
|
|
}
|
|
bs = bs[sepEndPos:]
|
|
schemeSepPos = bytes.Index(bs, schemeSep)
|
|
}
|
|
out = append(out, bs...)
|
|
return util.BytesToReadOnlyString(out)
|
|
}
|